Submitted on 2015-12-24 by Mike Palescuk

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Decorocrinus arkonensis (McIntosh 2001), formerly Botryocrinus. Found in 1976. 65 pieces painstakingly re-assembled into this 2-7/8" long

Photo title: Crinoid

Taxa present: Decorocrinus arkonensis

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: About 240 mm across, this roughly 15 pound tree stump was collected b Patricia Rutkowski from the Antrim Shale of the Paxton Quarry. Callixylon Newberryi is a primitive conifer that dates back to the late Devonian Period, which is considered the time period when trees first evolved. The Callixylon is a member of the extinct order of tree like plants named Archaeopteridales. These plants with fern like leaves are estimated to be 350 to 375 Million years old making them among the worlds oldest trees. These tree like plants had leaves similar to ferns. For many years scientists classified Archaeopteris as a separate genus than Callixylonin under the order of Archaeopteridales. In the 1960s, paleontologists were able to demonstrate that the fossil wood known as Callixylon and the petrified fern leaf imprints known as Archaeopteris were actually part of the same plant. This plant no matter what it is called has turned out to be the link between trees and ferns.

Photo title: Plant

Taxa present: Callixylon newberryi

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: Collected by Patricia Rutkowski from the Antrim Shale of the Paxton Quarry, the specimen is 303 mm long. Callixylon Newberryi is a primitive conifer that dates back to the late Devonian Period, which is considered the time period when trees first evolved. The Callixylon is a member of the extinct order of tree like plants named Archaeopteridales. These plants with fern like leaves are estimated to be 350 to 375 Million years old making them among the worlds oldest trees. These tree like plants had leaves similar to ferns. For many years scientists classified Archaeopteris as a separate genus than Callixylonin under the order of Archaeopteridales. In the 1960s, paleontologists were able to demonstrate that the fossil wood known as Callixylon and the petrified fern leaf imprints known as Archaeopteris were actually part of the same plant. This plant no matter what it is called has turned out to be the link between trees and ferns.

Photo title: Plant

Taxa present: Callixylon newberryi

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Submitted on 2014-10-11 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A beautiful crinoid prepared with the spines free standing.

Photo title: Devonian crinoid

Taxa present: Gilbertsocrinus ohioensis

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Submitted on 2014-10-11 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Crinoid showing regeneration of damaged arms.

Photo title: Devonian crinoid

Taxa present: Arthroacantha carpenteri

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Submitted on 2015-12-20 by Michael Lask

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: The stem alone is 137 mm long. Collected and prepared by Patricia Rutkowski. This incredible specimen is on a chunk of Arkona Shale that is over 15 inches long. Pat spent countless hours preparing this classic crinoid.

Photo title: Crinoid

Taxa present: Arthroacantha carpenteri

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Submitted on 2014-11-18 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 46 mm long. Collected and prepared by Patricia Rutkowski.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Submitted on 2014-11-18 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 35 mm from the top of the arms to the bottom of the calyx with about 29 mm of stem. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Logocrinus brandoni

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Submitted on 2014-11-22 by Sally Labadie

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This very good specimen measures 43mm in diameter and 37mm high. It is from the Northern Aggregates Quarry in Alpena. The photo shows three views, the anal, basal and side views.

Photo title: CRINOID CALYX

Taxa present: Dolatocrinus stellifer

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Submitted on 2014-11-22 by Mike Palescuk

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A fine specimen measuring 100mm long and 43mm wide. It rests on matrix that is 106mm X 72mm. The small inserted photo is a close-up of one of it's eyes (upper left of carapace).

Photo title: PHYLLOCARID

Taxa present: Rhinocaris ehlersi

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Submitted on 2014-11-22 by Margi Chriscinske

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: A fine specimen showing spines on the tegmen and anal plates. Many stubs of broken spines are visible. The calyx measuring 42mm in diameter and 36mm in height has some matrix attached. The two views show an angled view of the anal and side view with the basal view to the right.

Photo title: CRINOID CALYX SHOWING SPINES

Taxa present: Pithocrinus cooperi

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Submitted on 2015-01-14 by Alexander Brown

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: A side-by-side photo of two typical specimens showing both the brachial and pedicle views. The brachiopod on the left measures 31mm wide and the other is 35mm wide.

Photo title: BRACHIOPOD

Taxa present: Mucrospirifer thedfordensis

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Submitted on 2014-11-22 by Alexander Brown

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen measures 140mm in length and 42mm in diameter.

Photo title: HORN CORAL

Taxa present: Heliophyllum halli

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Submitted on 2014-11-22 by Alexander Brown

Location (approximate): Alpena, Alpena, MI

Strat unit: Traverse formation

Submitter notes: A complete colony measuring 150mm in length, 104mm wide, and 74mm thick. Found near Alpena. The photo shows the top view with a side view beneath it.

Photo title: COLONY CORAL

Taxa present: Hexagonaria percarinata

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Submitted on 2014-12-02 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Genshaw formation

Submitter notes: An exquisite specimen of a brachiopod encrusted with a bryozoan. This was found on the September 2014 FUMMP field trip to Alpena. The brachiopod is 6 cm across.

Photo title: Brachiopod encrusted with Bryozoa

Taxa present: Spinocyrtia granulosa, Atactotoechus typicus

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Submitted on 2014-12-02 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: An example of a articulate brachiopod with an inarticulate brachiopod on its shell. The Paraspirifer is 6 cm across.

Photo title: Brachiopods

Taxa present: Paraspirifer bownockeri, Petrocrania hamiltoniae

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Submitted on 2014-12-02 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is 6.7 cm across.

Photo title: Brachiopod

Taxa present: Mediospirifer audaculus

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Submitted on 2014-12-06 by Mike Palescuk

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Found by Bob Boyd, May 2014

Photo title: Blastoid

Taxa present: Hyperoblastus bassleri

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Submitted on 2015-04-03 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: Here is a very complete example of a Phillocarid mandible or Gastric tooth. These are attributed to the two largest species of Phillocarid, either Dithyrocaris or Herbertocaris. It isn't clear which. This very complete jaw or attachment structure is rarely preserved. The "teeth" are 3.5 cm or 1 inch long the matrix is 9.5 cm by 6 cm. collected by me on 6/28/14.

Photo title: Phillocarid "Mandible" & jaw,

Taxa present: Herbertocaris wideneri

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Submitted on 2015-04-03 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This image shows the entire piece with matrix. The matrix is 9.5 cm wide by 6 cm tall. This was cleaned by Scott Vergiels of the "Friends."

Photo title: Phillocarid "Mandible"

Taxa present: Herbertocaris wideneri

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